Found this today on a well rotted (Probably Fagus) tree stump.
Individual fruitbodies about 1mm in width, with an overall length (including stem) of about 3-4mm.
Not the best photos unfortunately, as I only had my Finepix S9600 with me, and these are as close as the macro would go.
I'm fairly sure that all are the same species, with the white fruitbodies turning brown for sporulation. (A couple of brown fruitbodies can be seen amongst the white ones).
Nearest (for physical appearance only

) I can find in Jordan are
Ceratiomyxa fructiculosa, and
Metatrichia floriformis, but I don't think this is either of those. (As neither are white becoming brown).
Any pointers towards ID much appreciated.
Regards,
Mike.